As a kid I loved the cartoon series The Space Sentinels, the spaceship which they used for there base had a small maintenance robot called Mo. Voiced by series Producer Lou Scheimer, Mo was there to provide comic relief against Sentinel One who was in charge of the 3 sentinels, Hercules, Astrea and Mercury. I think I like Mo because he falls in to the same type of category as robots like the Drones from Silent Running, R2-D2 fromStar Wars and later Wall-E from the Pixar film of the same name.
Anyway click on the small picture to take you to a You Tube link for Space Sentinels.
The picture below is a CG model of Mo that I made a few years back, not really a great deal of decent photos of him online.